Bur-removing punch for horseshoes.



G. E. HOLTON. BUR REMOVING PUNCH PORHORSESHOES. APPLICATION FILED AUG.27, 1910.

983,997. Patented Feb. 14, 1911 dito rne.

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G; E. HCLTON. BUR REMOVING PUNCH FOR HORSE-SHOES.

APPLIUATION FILED AUG. 27, 1910. 983,997 Patented Feb. 14, 19.11.

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G. E. HOLTON. BUR REMOVING PUNCH FOR HORSESHOES APPLICATION FILED AUG.27, 1910.

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lUNTT STATES PATENT @FFTQE.

GEORGE E. HOLTON, 0F CATASAUQUA, PENNSYLVANIA.

BUR-REMOVING PUNCH FOB, HORSESHOES.

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Application filed August 27, 1910.

To all whom it may concern:

Be it known that I, GEORGE E. HoL'roN, a citizen of the United States,residing at Catasauqua, in the county of Lehigh and State ofPennsylvania, have invented certain new and useful Improvements inBur-Re moving Punches for Horseshoes, of which the following is aspecification.

My invention relates to a machine by a single operation to punch nailholes in horse and mule shoes and at the same time remove the bur lefton the underside of the shoe in the punching of the holes therein; andin such connection the present invention relates to the generalconstructive arrangement of such machine, in which before the punchleaves the shoe a clamping device operated by a cam or equivalent meanson the main crank-shaft descends and holds the shoe firmly against a dieand then after the punch leaves the shoe a cam and lever give the die abackward motion sufficient to shear off the bur, which the punch hasleft on the under side of the shoe and when the clamping clevicereleases the shoe, the die returns to its position under the punch. Theabove clefined operations being repeated for each revolution of the maincrank shaft.

The nature and eneral scope of my invention will be more fullyunderstood from the following description taken in connection with theaccompanying drawings forming part hereof, in which Figure l, is a frontelevational view of a horse and mule shoe nail hole punching ma chine,embodying main features of my said invention. Figs. 2 and 8, arerespectively, side and rear elevational views thereof. Fig. 4:, is aview partly in plan and in broken section of the means for clamping theshoe; and Fig. 5, is a view in plan and in elevation of one arrangementof means for removing the burs from the underside of a shoe, after thenail holes have been punched therein.

Referring to the drawings A, is the metal standards for the workingparts of the machine.

W, is the crankshaft on which is mounted the loose fly-wheel or pulleyX. Motion from the said fiy-wheel or pulley is trans mitted to thecrank-shaft JV, by means of a sliding clutch Y. The crank-shaft W, maybe turned by hand while adjusting the punch T, by throwing out theclutch and using the hand wheel Z, which is keyed to the shaftSpecification of Letters Patent.

Patented Feb. fat, 1911.

Serial No. 579,269.

W. V, is a crank end cross-head connection for providing required motionto the cross head S. A tool-steel punch T, is firmly fastened in thecross-head S, by means of a clamp and bolts or other fastening means.The distance of the punch T, from the die D, is regulated by anadjusting screw Q, one end of which has a ball-and-socket joint in thecross-head S, the other end screwing into the crank end crossheadconnection V, and is locked after adjusting by means of a lockout U.

B, is an iron table slide to which is fastened the die seat (I. The dieD, is fastened in the die seat {7, by means of a set-screw. The parts13, (l and D, together are moved forward and backward by means of alever This is termed a grubbing lever which is equipped with anadjustable arm F, to take up wear of cams I and I and rolls G and H. Thecam 1 is so keyed to the said shaft TV, as that the die D, is moveddirectly under the punch T, when it descends. After a hole has beenpunched in the shoe and the punch has receded so as to clear the shoe,by half an inch, more or less, the cam T, operates to give the tableslide B, and die D, a backward horizontal motion sufficient to shear elfthe bur left on the underside of the shoe by the a eti on of the punchT. In order to shear off this bur the shoe must be held firmly againstthe die D, and must be pre vented from moving horizontally. The holdingof the shoe in a position to accomplish such a result is by means of asteel plate 3 and jaw 5. The plate 3, and jaw 5, are part of and movewith the grubbing yoke K. This yoke K, is connected to the standard A,by and moves around the shaft J. The shaft J, is eccentrically arrangedat the two points, where the grubbing yoke K, is attached to it, afterthe loosening the lock-nut 6, on the shaft J, it can be turned and theeccentrics will throw the grubbing yoke K, backward or forward to suitthe width of the shoe being punched. The lock nut 6, is then jammed andneed not be moved, until a wider or narrower shoe, is to be punched. Thegrubbing yoke K, is held away from the die D, by a lever L, and tensionsprings The lever L, is fastened to the yoke K, by means of a bolt 7,and has for a fulcrum a boss 9, on the grubbing yoke K. The power forlifting the yoke K. is furnished by the springs R, whose tension isadjusted by means of a bolt 10. Fastened to the other end of the leverL, by means of a bolt 8, is an adjustable rod M, which can be lengthenedand shortened by an adjusting bolt 11. The upper part of rod M, slidesin the guide N, and is fitted with a steel roller 0, bearing on a cam P.The cam P, moves the rod hi, and this in turn pushes down on the yoke K.The cam P, is so keyed to the shaft that the yoke K, descends and holdsthe shoe, while the punch is leaving and until the die D, moved by itscam and lever, has completed the backward motion, which shears off thebur left on the underside of the shoe by the punch. The springs R, thenraise the grubbing yoke K, and the operation is complete, and ready foranother hole to be punched and then to have the bur removed therefrom,by a single continuing operation of the machine.

Having thus described the nature and objects of my invention, what Iclaim as new and desire to secure by Letters Patent is 1.. A machine ofthe character described, comprising a punch. a die, a clamping de viceoperating to hold a shoe to the die and means while the shoe is stillclamped to said die to give a backward movement to the die after thepunch has been withdrawn.

2. A machine of the character described, comprising a punch, a die, aclamping device comprising a punch, a die, a clamping device,

a shaft havin a cam, said device actuated by said cam to hold a shoe,means to free the punch from the shoe, means to give a backward movementto the die after the punch has been withdrawn and to release saidclamping device,

at. A machine of the character described, comprising a punch, a die, aclamping device, a shaft having a cam, said device operated by saidjcamto hold a shoe firmly against said die, a eamand lever to actuate saiddie, means to give a backward movement to the die after the punch hasbeen withdrawn and means to release the shoe from said die.

In testimony whereof, I have hereunto set my signature in the presenceof two subscribing witnesses. V

GEO. E'HOLTQN.

itnesses GEORGE Mronor'r, JULIUs German.

